Incandescent-lamp socket.



oli MMD AUG. zo, 1907.

APPLIGAT u vif,

Y electrical lighting; now 4common While the' io'v the diameter of .the screw threaded end ofV the lamp' bulb to be inserted therein and 'greatiinportance Where bulbs, are u s'ed by l shapeduscrew thread, a -vielding contactpiece4 .havingits face foi'ined to correspond .to the screW-thread on the interior of 'the tubular' the thousand asin the electrical displays and socket asa Whole'prot'ects the Contact pieces 4and .Wires from 'exposure and forms an effective electrical contact between the bulbl and conducting Wires.

"1. A lampi socket provided' With-a screw threaded portion of greater diaineter than capable of receiving the screwthreadedfend of thelamp bulb by a direct thrust land'a yieldin 2,. The' comb'nationl4 with a lainp4 socket and a. lain'p, bulb provided with a screw Athreaded end,- the socket being provided With:-

' 'asc'rewthre'aded opening olf greater' diameter l than' the dianietenof the screw threaded end ofthe lain bulb and capable of receiving the s crewt readed en d of the lamp b'ulb by a direct thrust, of a s ring contact piece. larranged between the sild of its Wall constructed toyield to perinitthe entering of the llamp bulb by directthrust -andprovided with a screvir threaded interior for retaining the bulb in position.

.4.' An electric lamp socket provided with 4atubular extension and an annular shoulder around the tubular extension, the said tubu# lar extension being provided with a ratchet contactieee( arranged along the [side Wa l of the soc et for holding the bulb in -position the socket.

extension, the lSaid Contact pieceextending along the inner Wall of the extension, the relationof Vthe said .contact piece .to the opposite Wall of the tubular extension being such that a lainp bulb'inaybe inserted between the contact 'piecev and the vWall of t-he tubular extensiononly by crowding back the contact piece. 4 v A 1 y5. An-electric lamp socket comprising a body 4p ortion provi ded with a tubular exten.-

sion and an annular shoulder, the tubular extension being provided with an interior screw thread, ajspring contact piece extend-4 ing along and spaced from the innerujall of the tubular extension and extendingthence through the tubular extension .onto the said annular shoulder, a second contact piece ex tending 4froni'fthe interior tubular extension through the Wall thereof vontolhe annular the body of the Socket into engagement with the contact pieces, binding posts engaged with the 'contact pieces opposite the annular shoulder and a protecting ring surrounding the tubular extension and concealing the binding posts.

In testimony, that I claiin the foregoing as lmy invention, I have'signed 'my nainein presence of two Witnesses, this sixteenth day .of August, 1,907. l

,x i y ,WILLIAM F. WEGNEE f lvitnesses: i,Il GEORGE BARRY,

' HENRY THIEME.

, shoulder, fastening devices extending through 

